To explore the application value of 3D reconstruction technology and virtual diagnosis and treatment in laparoscopic ureteral stricture.

The data of patients with ureteral stricture admitted to the Second People's Hospital of Guiyang and Affiliated Hospital of Guizhou Medical University from October 2016 to September 2022 was analyzed. A total of 19 cases were included. There were 8 patients (5 males and 3 females) in the 3D group, the surgical planning was carried out with the 3D reconstruction visual model of CT data. Another 11 cases (7 males and 4 females) were in CT group, the surgical planning was carried out with the CT images. In the CT group, the location, length and degree of ureteral stenosis were determined by CT images before operation. In the 3D group, the preoperative operators used the 3D reconstruction model to determine the anatomical relationship and accurate positioning of the stenosis sites, and used the functions of the 3D reconstruction software (IPS) to calculate the surgical approach point, virtual flexible ureteroscope, puncture simulation and virtual resection to conduct preoperative simulation. Finally, all patients underwent transabdominal laparoscopic ureteral reconstruction surgery.

All 19 cases were successfully completed the surgery, and no case was converted to open surgery. The amount of blood loss in 3D group was significantly lower than that in CT group (P<0.05). There were no significant differences in the general situation (gender, age, location), postoperative hospitalization time, postoperative drainage time, and operation time between the two groups (P>0.05).

3D reconstruction technology and preoperative virtual surgery can assist surgeons to make individual surgical plans to achieve accurate resection and repair, reduce during operation bleeding, which has high clinical application value for improving surgical safety in laparoscopic ureteral stricture surgery, and is worthy of further promotion and application.